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Two-dimensional mapping of surface scatterers on an optical fiber core using selective mode launching

Authors :
Lu Peng
Linh Viet Nguyen
Jiawen Li
Nicolas Riesen
Dale Otten
David G. Lancaster
Heike Ebendorff-Heidepriem
Stephen C. Warren-Smith
Source :
APL Photonics, Vol 6, Iss 2, Pp 026105-026105-7 (2021)
Publication Year :
2021
Publisher :
AIP Publishing LLC, 2021.

Abstract

The tracking of small particles is an important but challenging task for biological applications such as disease diagnostics and medical research. Current methods are limited to the use of bulky instruments such as flow cytometers and microscopes. Here, a novel technique for the detection and measurement of micron-scale optical scatterers using a few-mode exposed-core microstructured optical fiber is proposed. Through selective mode launching combined with optical frequency domain reflectometry, scatterers located on the fiber core surface can be simultaneously mapped with both longitudinal and transverse information. This technique is demonstrated by detecting the two-dimensional positions of several femtosecond-laser-inscribed micron-scale ablations written at different locations on the fiber core surface. Due to the compact nature of the optical fiber and its local sensitivity to scatterers that are in close proximity to it, this technique has the potential for the measurement and detection of micron-scale particles in difficult to reach biological environments for in vivo applications.

Details

Language :
English
ISSN :
23780967
Volume :
6
Issue :
2
Database :
Directory of Open Access Journals
Journal :
APL Photonics
Publication Type :
Academic Journal
Accession number :
edsdoj.0ee25f180a7d4561a8f7d9c26695c182
Document Type :
article
Full Text :
https://doi.org/10.1063/5.0036300